\begin{itemize}

 \item does not start on line does not start on line does not start on line oes
   not start aa a a a a a a a a a a a a a a a a a a a a a a a a a a a a aa a a
   a a a a a a a a a a a a a a a a a

   Recall Euler's formula for planar graphs, \(V+E-F=2\).
 \item
   starts on own line starts on own line starts on own line aa a a a a a a a a
   a a a a a a a a a a a a a a a a a a a a aa a a a a a a a a a a a a a a a a a
   a a
   \begin{itemize}

    \item Let \(G\) be a maximal planar graph; we wish to show that every
      drawing of \(G\) has only triangular faces (counting the ``unbounded''
      face also as a triangle).

      Recall Euler's formula for planar graphs, \(V+E-F=2\).

   \end{itemize}

\end{itemize}
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